I wanted to ask to see if someone could help on how I could locate files in the directory or folder where I'm working and making a logic for example if the file does not exist execute a function or process, and if it does not run.
That is, I have a function that creates an output named JS:
JSFile = strcat (partitura_xml, '_', youtube_id, '_', hashname);
For example, if I look in the folder and locate a file with the name:
It would not be necessary to run the process because it already exists and is identified; and instead if I do not; would have to execute the function that creates the JS me. I hope I explained well, is like making a logical process (if there is such js not process, if there is no process or call the corresponding function) and do not know how to implement or locate or find files in the folder ...
On the other hand, I wanted to ask whether take long to make that search, for example if I have 100 files or more this search would take me a lot, because in that case would have to make a database. Thanks in advanced!